JPH03148549A - Confirmation of wiring and piping for multiple air conditioner - Google Patents

Abstract

PURPOSE:To prevent an erroneous operation from being carried out by a method wherein a refrigerant pipe for one indoor device is opened, it varying information and an identification number of the indoor device are transmitted back to a controller through a bus communication and a corresponding relation between a wiring and a piping is identified. CONSTITUTION:A controller 23 is energized, and if a corresponding relation between a wiring and a piping is not identified yet, an outdoor device 21 is energized and then indoor devices 11 and 13 are operated under an operation of each of remote controller 55, 57 or a concentration control device 44. Then, either one of flow rate control valves 31, 33 for a plurality of refrigerant pipes 41, 43 is released and then refrigerant is supplied to the indoor device 11 or 13. With such an arrangement, a temperature variation is detected by a temperature sensor 37 or 39. An identification signal or No. is transmitted back to a communication control part 71 or 73 in a controller 23 with a bus communication through a serial communication line 51 or 53 from the indoor device 11 or 13. The foregoing operation is repeated and a corresponding relation between the wiring and the piping is confirmed. In this way, an efficient wiring and piping can be confirmed and an erroneous operation can be prevented.

Description

Detailed Description of the Invention [Object of the Invention] (Industrial Application Field) The present invention is directed to a multi-air conditioner wiring system that checks the correspondence between wiring and piping between a plurality of indoor units and a controller in a multi-air conditioner. Regarding piping confirmation method.

(Prior art) A multi-air conditioner is a system in which multiple indoor units are controlled by one RFT central controller to air-condition the room or other location where each indoor unit is installed. In order to have this, it is necessary to properly match the multiple soot wiring for communication between each indoor unit and the controller and a plurality of piping for refrigerant. Specifically, for example, 1
The locations for wiring and piping are predetermined, such as wiring No. 1 must go to the location designated by the controller as No. 1, and piping No. 1 must go to the location designated by the controller as No. 1. and must be connected to that location with appropriate correspondence. If the correspondence between wiring and piping is incorrect, the controller will not be able to properly control the indoor unit that is sending the operation signal.
Wiring and piping must be redone.

Conventionally, checking such wiring and piping has been done by operating the indoor units one by one and checking, which requires considerable effort.

(Problem to be solved by the invention "a") Conventionally, checking of multiple wirings and piping between multiple indoor units and a controller in a multi-air conditioner has been carried out while operating each indoor unit one by one. There is a problem in that it requires a considerable amount of effort, and if the correspondence between the wiring and piping is incorrect, the wiring and piping must be redone, which is extremely time-consuming and inefficient.

The present invention has been made in view of the above, and its purpose is to provide a method for confirming the wiring and piping of a multi-air conditioner, which appropriately and efficiently confirms the correspondence between the wiring and piping in the multi-air conditioner. be.

[Structure of the invention]

(Means for Solving the Problems) In order to achieve the above object, the method for checking the wiring and piping of a multi-air conditioner according to the present invention divides the refrigerant supplied from the compressor to each of a plurality of locations to selectively supply the refrigerant. A plurality of supplied indoor units or a plurality of indoor units each assigned an identification number are installed, and the plurality of indoor units are controlled so as to independently air condition each location where each indoor unit is installed. A wiring and piping confirmation method for a multi-air conditioner that checks the correspondence between the wiring between the controller and a plurality of indoor units and the piping that supplies refrigerant to each room in a multi-air conditioner that has a controller, the method comprising: Operate manually or automatically or by remote control to open a refrigerant pipe for any one of the plurality of indoor units via the controller to supply refrigerant to the indoor unit, and the opened refrigerant pipe detects a change due to the refrigerant in the indoor unit to which it is connected, and the indoor unit that detects this change returns the change information to the controller via serial communication wiring or by bus communication together with its own identification number. Then, the controller checks the correspondence between the serial communication wiring or the identification number of the indoor unit that received the change information and the opened refrigerant pipe, and performs the process from opening the refrigerant pipe to the confirmation operation for each indoor unit. The gist is to repeat the process repeatedly.

(Function) In the method for checking the wiring and piping of a multi-air conditioner according to the present invention, multiple indoor units are operated manually, automatically, or by remote control, the refrigerant piping for one indoor unit is opened, and the resulting changes are detected in the indoor unit. detects this change information and returns this change information to the controller via serial communication wiring or by bus communication together with a separate number of the indoor unit. The operation of checking the correspondence with the opened pipes is repeated for each indoor unit.

(Example) Embodiments of the present invention will be described below with reference to the drawings.

1v1 is a configuration diagram of a multi-air conditioner according to a first embodiment to which the multi-air conditioner wiring and piping confirmation method of the present invention is applied. The multi-air conditioner shown in the same figure is installed in each separate room, etc., and has a plurality of indoor units 11.1 that air condition each room.
3 and an outdoor unit 21 constituting a central control device that commonly controls the plurality of indoor units 11.13 and supplies refrigerant to each indoor unit so as to control the air conditioning operation of each indoor unit 11.13. .

Each of the plurality of indoor units 11.13 has a plurality of refrigerant pipes 41.
．． 43 and serial communication wiring 51.53 to the outdoor unit 21, and each refrigerant pipe 41.43 is also connected to the outdoor 1121 via a return pipe 45. Specifically, the outdoor unit 21 has a heat exchanger 25, which is connected to refrigerant pipes 41 and 43 via flow control valves 31 and 33, respectively, and these refrigerant pipes 41 and 43.
The refrigerant is supplied to the indoor units 11 and 13 through the respective indoor units 11 and 13. The refrigerant supplied to each indoor unit 11, 13 is returned to the outdoor unit 21 via the common return pipe 45. The refrigerant returned to the outdoor unit 21 is supplied to the compressor 29 via the four-way valve 35, and from the cone compressor 29 is supplied to the heat exchanger 25 via the four-way valve 35, and then again to the flow control valve 31.33.
The refrigerant is supplied to each indoor unit 11.13 via refrigerant pipes 41.43. Further, the heat exchanger 25 is provided with a fan 27 .

The outdoor unit 21 includes a controller 2 that performs overall electrical control.
3, and the serial communication wiring 51 and 53 connect to the serial communication control unit 71 provided in the controller 23.
．． 73 respectively, and the serial communication control unit 71
．． 73 to each indoor unit 11.13 via serial communication wiring 51.53, or vice versa, serial communication $4111871.73 is transmitted from each indoor unit 11.13 to serial communication wiring 51.53. The refrigerant pipes 41, 43 and the controller 23 of the outdoor unit 21 exchange information with each other.

The controller 23 also includes the flow control valves 31 and 33.
A compressor control unit 65 that controls the compressor 29, a four-way valve control unit 69 that controls the four-way valve 35, and a fan control unit 67 that controls the fan 27 for the heat exchanger 25. have.

Furthermore, each indoor unit 11.13 has a fan 15.1.
7 and a temperature sensor 37,3 for monitoring the air conditioning temperature.
9 and a so-called remote control 5 for remotely controlling each indoor unit 11.13 near its installation location.
5.57 are connected to each indoor unit 11.13, respectively. In addition, a central control device 47 is installed in each room vA11.13.
are commonly connected.

FIG. 2 is a block diagram showing the configuration of the controller 23 used in the multi-air conditioner shown in FIG. 1 in more detail. As shown in the figure, the controller 23 includes, in addition to the above-mentioned components, a central processing unit (CPU) 81 consisting of a microprocessor etc. that controls the overall operation, and each serial communication control unit 71 to 73. Each indoor unit 11
．． 13, the correspondence relationship between the piping and wiring between each indoor unit 11.13 and the controller 23, that is, the correspondence relationship between the refrigerant pipe 41.43 and the serial communication wiring 51.53. It has a storage unit 85 and a timer 87 for storing. In Figure 2, outdoor unit 1
1 to 13, three serial communication control units 71 to 73, and three flow rate control valve control units 61 to 63 are shown, and the symbols in between are given. Note that although only two or three indoor units and each component such as the serial communication control units 71 to 73 provided in connection with the indoor unit are shown in this embodiment, the present invention is not limited to this. , multiple units can be installed.

Next, the operation will be explained with reference to the flowcharts and timing charts shown in FIG. 3 and subsequent figures.

First, the operation of the controller 23 will be explained with reference to FIG.

In FIG. 3, when the controller 23 is activated (step 100), it is checked whether the correspondence between wiring and piping has been recognized (step 110). If the recognition has not been completed, the process proceeds to the recognition mode from step 120 onwards, operates the compressor 29, fan 27, and four-way valve 35 of the outdoor unit 21, and then operates all indoor units 11.1.
3 is operated manually (step 130). To operate all indoor units 11.13, for example, each indoor unit 11.
This is done by sequentially operating the remote controllers 55, 57 provided in each indoor unit 11, 13, or by operating the central control device 47 commonly provided in each indoor unit 11, 13.

After operating all the indoor units 11.13, the controller 23 opens the flow control valve corresponding to any one set of the plurality of refrigerant pipes 41.43 (Step 140), and the opened flow control valve Refrigerant is supplied to one of the indoor units via the refrigerant pipe corresponding to the refrigerant pipe. As a result, in the indoor unit supplied with the refrigerant, a temperature change occurs due to the influence of the refrigerant, so this temperature change is detected by the temperature sensor installed in the indoor unit, and the indoor unit uses the detected change data. An operation of supplying the data to the controller 23 via serial communication wiring is performed.

Therefore, in the controller 23, the serial communication control unit 7 connected to each serial communication wiring 51, 53
1.73, it is monitored whether a signal indicating a temperature change is returned from each indoor unit 11 or 13 (step 150).
. When a signal is returned from the indoor unit, the serial communication wiring number is identified by the data discrimination unit 83 from the identification number of the serial communication control unit 71 or 73 that received this signal, and thereby the signal is released as described above. The serial communication wiring corresponding to the refrigerant pipe identified is recognized, and the correspondence relationship between the recognized refrigerant pipe and the serial communication wiring is stored in the storage unit 85 (step 160).

Further, in the monitoring operation of step 150, if there is no signal returned from the indoor unit, it is recognized that there is no serial communication wiring corresponding to the opened refrigerant pipe (step 170). Next, check whether the above-mentioned recognition process of the correspondence relationship between piping and wiring has been performed for all indoor units 81111.13 (for example, N units).Step 1
80) If the process has not been completed for all N indoor units, the process returns to step 140 and the above-described operations are repeated until the recognition process of the correspondence between the piping and wiring of all N indoor units is completed. After completing the recognition of the correspondence between piping and wiring for all indoor units (step 190)
, return to step 110.

When the recognition of the correspondence between wiring and piping is completed in the above manner, the check in step 110 is followed by step 20.
The process proceeds to the normal mode after 0, and checks whether there is a control signal from the indoor units 11, 13 (step 200). If there is no control signal, the process returns to step 110. When there is a control signal, that is, when the indoor unit requests operation, the controller 23 identifies the identification number of the serial communication wiring from the serial communication control unit that received the control signal via the data discrimination unit 83. , the piping number of the refrigerant pipe corresponding to the serial communication wiring with this identification number is manually entered from the storage unit 85 (step 210).

Then, the flow control valve for the refrigerant pipe with this pipe number is controlled to open, thereby supplying refrigerant to the corresponding indoor unit, and starting the operation of the indoor unit (step 220).

Next, the wiring/piping confirmation operation will be described with reference to the flowchart shown in FIG. 4 and the timing chart shown in FIG.

First, in FIG. 4, operate the remote controllers 55, 57 or central control device 47 connected to each indoor unit 11, 13 to control all N indoor units 11, 13 (e) in FIG.
), (h), and (k) (steps 310, 320). Then, in step 3, operate the compressor 29, fan 27, and four-way valve 35 of the outdoor unit 21.
30), then the controller 23 connects the plurality of refrigerant pipes 41.4
5, any one set of the plurality of flow control valves 31 and 33 corresponding to 3, for example, the first flow control valve 31, is opened, thereby causing any one of the corresponding flow control valves 31, 33 to open as shown in FIG. 5(a). For example, the refrigerant is supplied to the corresponding first indoor unit 11 via the first refrigerant pipe 41 (step 340).

Then, as shown in FIG. 5(b), the timer 87 is activated (step 350).

As a result, refrigerant is supplied to the first indoor unit 11 connected to the first refrigerant pipe 41, and a temperature change occurs due to the influence of the refrigerant as shown in FIG. 5(f). Therefore, it is checked in step 360 whether this temperature change has occurred. This temperature change is the first
The temperature is detected by the temperature sensor 37 provided in the first indoor unit 11, and the first indoor unit transmits the detected temperature change information to the first serial communication connected to the first indoor unit 11. It is transmitted to the controller 23 via the wiring 51 as shown in FIG. 5(g) (step 370).

The information thus transmitted from the indoor unit 11 via the serial communication wiring 51 is received by the controller 23 via the serial communication control section 71 as shown in FIG. 5(C). Further, when the controller 23 receives the information from the indoor unit 11, the timer operated in step 350 stops, as shown in FIG. 5(b).

Therefore, in the controller 23, the data determination unit 83 determines the serial communication wiring number from the identification number of the first serial communication control unit 71 connected to the first serial communication wiring 51 that received this information. identify,
As a result, the first serial communication wiring 51 corresponding to the opened first refrigerant pipe is recognized as described above, and the correspondence relationship between the recognized refrigerant pipe 41 and the serial communication wiring 51 is stored in the storage section 85. Store (step 470).

Then, check whether the above-mentioned recognition process of the correspondence relationship between piping and wiring has been performed for all indoor units (for example, N units) (step 480), and if it has not been completed for all N units, step 480). Return to 340 and N
The above-mentioned operation is repeated until the process of recognizing the correspondence between the pipes and wiring of all the indoor units is completed.

Note that following step 360, step 380.
400. ..., 420, each indoor unit 11
．． Check the temperature change in 13 from the 1st to the nth
The process is carried out in a cascade manner up to the th indoor unit, but as mentioned above, one flow control valve is opened and the corresponding one
When one refrigerant pipe is opened, it is unknown which indoor unit the temperature will change in until the correspondence is recognized. In other words, to which indoor unit the opened refrigerant pipe is connected,
Therefore, as shown in steps 360 to 420, the presence or absence of a temperature change is checked in a cascade manner for the first to nth indoor units in the shield, thereby detecting the corresponding indoor unit. It is. For example, if there is no temperature change in the first indoor unit, the second
It is checked whether there is a temperature change in the th indoor unit,
If there is no temperature change in the second indoor unit, the next indoor unit is checked, and so on, and in this way, an indoor unit with a temperature change is detected.

The temperature change check of all the indoor units from the first to the nth indoor units is repeated until the timer activated in step 350 runs out (step 450).
If a time-up occurs and no temperature change is detected from any indoor unit, it is recognized that there is no serial communication wiring corresponding to the opened refrigerant pipe, and this is stored in the storage unit 85 (step 460). Then, as described above, the process of recognizing the correspondence between piping and wiring is repeatedly performed for all indoor units (for example, N units).

Next, with reference to the flowchart shown in FIG. 6, operation control of the indoor unit after the correspondence between wiring and piping is recognized as described above will be described.

In FIG. 6, first, in order to check which indoor unit has issued an operation request, all indoor units connected to all serial communication wirings 51 and 53 from the 1st to the nth It is checked in turn whether or not there is a control signal from each of the indoor units 11 to 13 (steps 510 to 530). This is performed by sequentially checking whether a control signal is being transmitted from each serial communication wiring 51.53 to each serial communication control unit 71.73 of the controller 23. As a result, if it is identified that there is a control signal from the indoor unit connected to the nth serial communication wiring, the storage unit 85 stores the piping number corresponding to the nth serial communication wiring.
(steps 540 to 560), the flow rate control valve for the refrigerant pipe corresponding to this pipe number is controlled to open,
Accordingly, the operation of the corresponding indoor unit is controlled (step 570).

FIG. 7 is a timing chart showing the operation when the serial communication wiring between each indoor unit and the controller 23 of the outdoor unit 21 is not connected at all. As can be seen from the comparison with the timing chart of Fig. 5 mentioned above, the operation shown in Fig. 7 is performed after starting all the indoor units.
Even though the flow control valves corresponding to each amount of refrigerant were opened one by one and refrigerant was supplied to the indoor units in order through each refrigerant pipe, the serial communication wiring was not connected, so the temperature in the indoor units changed. The information on the controller 23 of the outdoor unit 21
As a result, each indoor unit 11
．． It can be seen that the serial communication wiring between 13 and controller 23 is not connected at all. In this case, the timer continues to operate until it times out.

FIG. 8 is a configuration diagram of a multi-air conditioner according to a second embodiment to which the method for checking wiring and piping of a multi-air conditioner according to the present invention is applied. The multi-air conditioner shown in FIG. 1 is constructed by removing the remote controllers 55, 57 connected to each indoor unit 11, 13 and the central control device 47 commonly connected in the multi-air conditioner shown in FIG. The difference is that various operations such as starting, stopping, temperature setting, etc. for each indoor unit 11 and 13 are automatically and remotely performed from the controller 23 of the outdoor unit 21, and other configurations and operations are different. is the same as the multi-air conditioner shown in Figure 1.

FIG. 9 is a block diagram showing the detailed configuration of the controller 23 and its peripheral parts used in the multi-air conditioner shown in FIG. 8. As explained in FIG. 8, the controller 23 shown in the figure is designed to control the indoor units 11, 13 without the remote controller 55, 57 and the central control device W47, and for this purpose, each indoor unit 11, 13. The controller 13 is configured to be able to control various operations such as starting, stopping, and temperature setting for the controller 13, and other configurations and functions are the same as the controller 23 in FIG.

The action of the controller 23 in the multi-air conditioner of the second embodiment shown in FIGS. 8 and 9 described above is similar to the action of the controller of the first embodiment shown in FIG. The only difference is that all indoor units 11.13 are automatically operated from the controller 23 instead of being operated manually.

FIG. 10 and FIG. 11 are a flowchart and a timing chart, respectively, showing the wiring/piping recognition operation in the multi-air conditioner according to the second embodiment. The wiring/piping recognition operation shown in FIGS. 10 and 11 is similar to the wiring/piping recognition operation in the first embodiment described in FIGS.
57 or a centralized $1r8 unit W47, which was operated manually one by one, in step 3 of Fig. 4.
The only difference is that the controller 23 sends an operation signal to each indoor unit 11.13 to automatically operate all the indoor units 11.13 as shown in step 308 in FIG. 10 instead of 10.320. It is. Also, in the timing chart of FIG. 11, as shown in (a) of the same figure, all the indoor units 11.13 are automatically operated simultaneously by the operation signal from the controller 23. It is something.

In the second embodiment described above, each indoor unit 11.13
Since the operations of the indoor units 11.13 are commonly controlled from the centrally located controller 23, there is no need to operate each indoor unit 11.
It can be easily controlled from the controller 23 provided at one central location without having to go to the location 13.

FIG. 12 is a configuration diagram of a multi-air conditioner according to a third embodiment to which the method for checking wiring and piping of a multi-air conditioner according to the present invention is applied. The multi-air conditioner shown in FIG. The control unit 71.73 is removed, a bus communication control unit 70 is provided in the controller 23 in its place, and a bus communication wiring 50 is provided in common between each indoor unit 11.13 and the bus communication control unit 70, Further, an identification number is assigned to each indoor unit 11.13, and this identification number is assigned to the bus communication wiring 5.
0 from each indoor unit 11.13 to the controller 23, thereby recognizing the correspondence between the identification number of each indoor unit 11.13 and the piping, that is, the refrigerant pipe 41.43. The only difference is that The other configurations and functions are the same as the multi-air conditioner shown in FIG. 19.

FIG. 13 is a block diagram showing the detailed configuration of the controller 23 and its peripheral parts used in the multi-air conditioner shown in FIG. 12. The controller 23 shown in the figure is the 12th
As explained in the figure, the serial communication control section 71 in FIG.
．． 73 is replaced by a bus communication control section 70, which is commonly connected to each indoor unit 11.
.

Each indoor unit 11゜13 is identified by the identification number assigned to 13.
It recognizes the correspondence between the piping between and the outdoor unit 21 and the identification numbers of each indoor unit 11 and 13.

FIG. 14 is a flowchart showing the wiring/piping recognition operation in the multi-air conditioner of the embodiment shown in FIG. 14th
Steps 310 to 350 of wiring/piping recognition operation shown in the figure
The operations up to this point are the operations from steps 310 to 350 in the wiring/piping recognition operation shown in FIG. one flow control valve 3 of
The operation is exactly the same as opening the refrigerant pipe 1.33, supplying refrigerant to the indoor unit through the corresponding one refrigerant pipe 41 and 43, and further operating the timer 87.

The operations after this, that is, the operations after step 361 in the third embodiment shown in FIG. 14, are basically the same as the operations after step 360 in the first embodiment shown in FIG. 4, but are different. In the third embodiment shown in FIG. 14, when an indoor unit to which refrigerant is supplied via a refrigerant pipe corresponding to an open flow rate control valve detects a temperature change, this temperature change information is The controller 23 does not only return the temperature change information to the controller 23, but also sends back the identification number of the own indoor unit along with this temperature change information to the controller 23 via the common bus communication wiring 50. The correspondence between the identification number and the opened refrigerant pipe is recognized and stored. Then, the controller 23 controls each indoor unit based on the correspondence between the stored identification numbers and the pipes.

That is, steps 361, 381° 401 in FIG.
．． In step 421, it is checked which indoor units have experienced a temperature change due to the refrigerant supplied through the opened refrigerant pipes for the first to nth indoor units. Then, the indoor unit that has experienced a temperature change transmits its own identification number along with this temperature change information to the controller 23 via the common bus communication wiring 50 (steps 371, 391, 411, 431).
.

The controller 23 transmits the identification number of the indoor unit along with this temperature change information from the bus communication wiring 50 to the bus communication control unit 70.
The identification number of the indoor unit corresponding to the opened refrigerant pipe is recognized by the data discrimination section 83, and this correspondence is stored in the storage section 85 (step 471). Further, if information is not returned from any indoor unit within a predetermined time-up period, it is recognized that there is no indoor unit corresponding to the opened refrigerant pipe, and this is also stored (step 461). .

Next, with reference to the flowchart shown in FIG. 15, the operation control of the indoor unit of the third embodiment after the correspondence between the opened refrigerant pipe and the identification number of the indoor unit is recognized and memorized as described above. I will explain about it.

In FIG. 15, first, in order to check which indoor unit has issued an operation request, an operation request is sequentially made to each of the first to nth indoor units 11.13. It is checked whether the control signal is sent via the bus communication wiring 50 (steps 511 to 531). In this case, each indoor unit that transmits the control signal also transmits its own identification number along with the control signal. As a result, when the controller 23 receives a control signal from the i-th indoor unit together with its identification number, the received i-th
Steps 541 to 561) of reading the piping number of the refrigerant pipe corresponding to the identification number of the th indoor unit from the storage unit 85;
The flow rate control valve for the refrigerant pipe corresponding to this pipe number is controlled to open, thereby controlling the operation of the corresponding indoor unit (step 571).

In the third embodiment described above, each indoor unit 11.
A common bus communication wiring 50 between the controller 13 and the controller 23
Since the connection is made through
1.13, and the wiring work can be done easily.

16 and 16 are configuration diagrams of a fourth embodiment of a multi-air conditioner to which the multi-air conditioner wiring and piping confirmation method of the present invention is applied, and a controller used in the multi-air conditioner, respectively. The multi-air conditioner of the fourth embodiment shown in the same figure has both improvements made in the second and third embodiments, respectively, with respect to the first embodiment, that is, (1
) The remote controllers 55, 57 and central control device 47 connected to each indoor unit 11 and 13 are removed, and each indoor unit 11
．． 13 can be automatically controlled from the controller 23. (2) Serial communication wiring 51.
Using a common bus communication wiring 50 instead of 53, an identification number is given to each indoor unit 11.13, and this indoor unit 11
．． This system also incorporates the improvement of recognizing and storing the correspondence between 13 identification numbers and piping.

Therefore, the operation of this fourth embodiment is similar to that of the piping/wiring recognition operation in the third embodiment described above.
Instead of manually operating each indoor unit one by one using the remote controller 55, 57 or the central control device 47, the controller 23 sends an operating signal to each indoor unit 11, 13. All indoor units 11 by control
．． They are exactly the same except that they operate 13 at the same time.

In the fourth embodiment described above, each indoor unit 11.13
Since the operations of the indoor units 11 and 13 are commonly controlled from the centrally located controller 23, there is no need to operate each indoor unit 11 and 13 individually using a remote control.
It can be easily controlled from the controller 23 provided at one central location without having to go to the location 13, and each indoor unit 11.13 and the controller 23 are connected via a common bus communication wiring 50. Therefore, each indoor unit 11
．． 13 and the controller 23, and there is no need to perform each wiring corresponding to each indoor unit 11.13 like the serial communication wiring 51.53, making the wiring work easier. Can be done.

FIGS. 18 and 19 are configuration diagrams of a fifth embodiment of a multi-air conditioner to which the multi-air conditioner wiring and piping confirmation method of the present invention is applied, and a controller used in the multi-air conditioner, respectively.

The fifth embodiment shown in FIGS. 18 and 19 remotely controls the operation of each indoor unit 11, 13 via a telephone line, and also transmits to the controller 23 that it is in the wiring/piping recognition mode. This embodiment differs from the first embodiment in that the wiring and piping recognition operation can be performed by remote control.

That is, the multi-air conditioner of this fifth embodiment has the first
In this embodiment, a telecontroller 44 is provided in place of the central control device 47, and the telecontroller 44 is connected to the telephone line 92, and an adapter 46.48 is provided between each indoor unit 11.13 and the remote control 55.57. established,
The telecontroller 44 is connected to each indoor unit 11.13 via each adapter 46.48, thereby connecting the telephone line 92 to the telecontroller 44 and the adapter 46.48.
This embodiment differs from the first embodiment in that it is configured to control the operation of each indoor unit 11.13 via the indoor unit 11.13, and to transmit wiring and piping recognition mode information to the controller 23 via each indoor unit 11.13. It is something that Note that a telephone set 93 is connected to the telecontroller 44 as shown in FIG.

FIG. 20 and FIG. 21 are a flowchart and a timing chart, respectively, showing the wiring/piping recognition operation in the multi-air conditioner of the fifth embodiment. The wiring/piping recognition operation shown in FIGS. 20 and 21 is similar to the wiring/piping recognition operation shown in FIGS. 10 and 11.
In the pipe recognition operation, each indoor unit 1 is sent from the controller 23.
1. Send the operation signal to 13 and all indoor units 11, 1
3 is automatically operated, while the telephone line 92
All the indoor units 11.13 are remotely controlled and operated from the telecontroller 44 and adapters 46.48, and the controller 2 is operated from each indoor unit 11.13.
The only difference is that the wiring/piping recognition mode is communicated to step 3 (step 305). Also, in the timing chart of FIG. 21, (a)
From the telephone line 92 to the telecontroller 44 as shown in
and all indoors via adapter 46.48
, 13 are remotely controlled to start operation of all the indoor units 11.13 as shown in (b) of the figure.

In the fifth example described above, since the operation of each indoor unit 11.13 in the wiring/piping recognition mode is remotely controlled via the telephone line 92, the operation of each indoor unit 11 and 13 in the wiring/piping recognition mode is controlled remotely via the telephone line 92. (But it can be easily controlled remotely.

〔Effect of the invention〕

As explained above, according to the present invention, a plurality of indoor units can be operated manually, automatically, or by remote control, and one
The refrigerant piping to the indoor unit of the stand is opened, the indoor unit detects the change caused by this, and returns this change information to the controller via serial communication wiring or by bus communication together with the indoor unit's identification number. Since the controller repeatedly performs the operation of recognizing the correspondence between the identification number of the wiring or indoor unit that received the information and the opened piping for each indoor unit, it is possible to identify the identification number of the wiring or indoor unit. Not only can you check the correspondence with the piping properly and efficiently, but you can also operate each indoor unit based on this correspondence, so there is no need to make mistakes or redo the correspondence between the wiring and piping, and the process is efficient. Wiring and piping and its confirmation can be performed. Furthermore, when using remote control, the operator does not need to go to the location where the multi-air conditioner or indoor unit is installed, and can operate efficiently from a remote location.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram of a multi-air conditioner according to a first embodiment of the present invention to which the wiring and piping confirmation method for a multi-air conditioner is applied, and FIG. 2 is a diagram showing the configuration of a controller used in the multi-air conditioner shown in FIG. 3 is a flowchart showing the operation of the controller in FIG. 2, FIGS. 4 and 5 are a flowchart and timing chart respectively showing the wiring and piping confirmation operation in the multi-air conditioner shown in FIG. 1, and FIG. A flowchart showing the operation control of the indoor units after checking the wiring and piping of the multi-air conditioner shown in Figure 1, and Fig. 7 is a flowchart showing the operation control of the indoor units after checking the wiring and piping of the multi-air conditioner shown in Fig. 1. A flowchart showing the operation, FIG. 8 is a block diagram of a multi-air conditioner according to the second embodiment to which the wiring and piping confirmation method for a multi-air conditioner of the present invention is applied, and FIG. A flowchart and a timing chart showing the wiring and piping confirmation operation, FIG. 12 is a block diagram of a multi-air conditioner according to a third embodiment to which the wiring and piping confirmation method for a multi-air conditioner of the present invention is applied, and FIG. 13 is a diagram of the multi-air conditioner shown in FIG. A block diagram showing the configuration of the controller used in the air engine, Fig. 14 is a flowchart showing the wiring and piping confirmation operation in the multi air conditioner of the third embodiment, and Fig. 15 shows the wiring and piping in the multi air conditioner of the third embodiment. 16 is a flowchart showing the operation control of the indoor unit after confirmation. FIG. FIG. 18 is a block diagram showing the configuration of a controller used in a multi-air conditioner, and FIG.
Figure 9 is a block diagram showing the configuration of the controller used in the multi-air conditioner shown in Figure 18, and Figures 20 and 21.
The figures are a flowchart and a timing chart showing the wiring and piping confirmation operation in the multi-air conditioner according to the fifth embodiment, respectively. 11.12.13... Indoor unit, 21... Outdoor unit, 23... Controller, 31.33... Flow rate control valve, 41.43... Refrigerant pipe, 44... Telecontroller, 50... Bus communication wiring, 51.53... Serial communication wiring, 47... Central control device, 55.56, 57●●● remote control, 70... Bus communication control unit, 71.72.73 ...Serial communication control section, 85...
・Storage unit, 92...telephone line. Fuwaben Burial Priest Hidekazu Miyoshi

Claims (6)

[Claims] (1) Install multiple indoor units that selectively supply refrigerant by dividing the refrigerant supplied from the compressor to multiple locations, and air condition each location where each indoor unit is installed independently. A method for checking the wiring and piping of a multi-air conditioner, which includes a controller for controlling the plurality of indoor units, in which the wiring between the controller and the plurality of indoor units and the correspondence of each pipe supplying refrigerant to each room are checked. Manually operating the plurality of indoor units, opening a refrigerant pipe to any one of the plurality of indoor units via the controller to supply refrigerant to the indoor unit, and opening the indoor unit. A change caused by the refrigerant is detected in the indoor unit to which the refrigerant piping is connected, and the indoor unit that detects this change returns the change information to the controller via serial communication wiring, and the controller receives the change information. The wiring and piping confirmation for a multi-air conditioner is characterized in that the correspondence between the serial communication wiring that has been opened and the opened refrigerant piping is confirmed, and the process from opening the refrigerant piping to the confirmation operation is repeatedly performed for each indoor unit. Method. (2) Install multiple indoor units that selectively supply refrigerant by dividing the refrigerant supplied from the compressor to multiple locations, and air condition each location where each indoor unit is installed independently. In a multi-air conditioner that has a controller that controls the plurality of indoor units, check the wiring between the controller and the plurality of indoor units and the correspondence of each pipe that supplies refrigerant to each room. Check the wiring and piping of the multi-air conditioner. The method includes automatically operating the plurality of indoor units, opening a refrigerant pipe to any one of the plurality of indoor units via the controller to supply refrigerant to the indoor unit, and A change due to the refrigerant is detected in the indoor unit to which the open refrigerant pipe is connected, and the indoor unit that detects this change returns the change information to the controller via the serial communication wiring, and the controller transmits the change information. Wiring and piping for a multi-air conditioner, characterized in that the correspondence between the received serial communication wiring and the opened refrigerant piping is confirmed, and the process from opening the refrigerant piping to the confirmation operation is repeatedly performed for each indoor unit. Confirmation method. (3) The refrigerant supplied from the compressor is divided into multiple locations to selectively supply the refrigerant, and each indoor unit is installed with an identification number assigned to each location. Identification of each pipe that supplies refrigerant to each room between the controller and the plurality of indoor units and each indoor unit in a multi-air conditioner having a controller that controls the plurality of indoor units so as to independently air condition each location. A method for checking wiring and piping of a multi-air conditioner to check correspondence with numbers, wherein the plurality of indoor units are manually operated, and refrigerant piping is connected to any one of the plurality of indoor units via the controller. is opened to supply refrigerant to the indoor unit, a change due to the refrigerant is detected in the indoor unit to which the opened refrigerant pipe is connected, and the indoor unit that detects this change records the change information and its own identification number. is returned to the controller via bus communication, the controller confirms the correspondence between the received identification number and the opened refrigerant pipe, and performs the process from opening the refrigerant pipe to the confirmation operation for each indoor unit. A method for checking the wiring and piping of a multi-air conditioner, which is characterized by repeated steps. (4) The refrigerant supplied from the compressor is divided into multiple locations to selectively supply the refrigerant, and each indoor unit is installed with an identification number assigned to each location. Identification of each pipe that supplies refrigerant to each room between the controller and the plurality of indoor units and each indoor unit in a multi-air conditioner having a controller that controls the plurality of indoor units so as to independently air condition each location. A method for checking the wiring and piping of a multi-air conditioner to check the correspondence with the numbers, the method automatically operates the plurality of indoor units, and connects the refrigerant piping to any one of the plurality of indoor units via the controller. is opened to supply refrigerant to the indoor unit, a change due to the refrigerant is detected in the indoor unit to which the opened refrigerant pipe is connected, and the indoor unit that detects this change records the change information and its own identification number. is returned to the controller via bus communication, the controller confirms the correspondence between the received identification number and the opened refrigerant pipe, and performs the process from opening the refrigerant pipe to the confirmation operation for each indoor unit. A method for checking the wiring and piping of a multi-air conditioner, which is characterized by repeated steps. (5) Install multiple indoor units that selectively supply refrigerant by dividing the refrigerant supplied from the compressor to multiple locations, and air condition each location where each indoor unit is installed independently. A method for checking the wiring and piping of a multi-air conditioner, which includes a controller for controlling the plurality of indoor units, in which the wiring between the controller and the plurality of indoor units and the correspondence of each pipe supplying refrigerant to each room are checked. The plurality of indoor units are operated by remote control, and the controller is informed that the mode is a wiring/piping confirmation mode, and the refrigerant is supplied to any one of the plurality of indoor units via the controller. The piping is opened and refrigerant is supplied to the indoor unit, a change due to the refrigerant is detected in the indoor unit to which the opened refrigerant pipe is connected, and the indoor unit that detects this change transmits the change information to the serial communication wiring. the controller confirms the correspondence between the serial communication wiring that received the change information and the opened refrigerant pipe;
A method for checking wiring and piping of a multi-air conditioner, characterized in that the process from opening the refrigerant piping to the checking operation is repeatedly performed for each indoor unit. (6) The method for checking the wiring and piping of a multi-air conditioner according to claim (5), wherein the remote control is performed so that each indoor unit is activated via a telephone line.